參數(shù)資料
型號(hào)： 90E36ERGI
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類(lèi)： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PQFP48
封裝： TQFP-48
文件頁(yè)數(shù)： 48/75頁(yè)
文件大?。?/td> 904K
代理商： 90E36ERGI
90E36
POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
Register
52
August 24, 2011
6.4
CONFIGURATION AND CALIBRATION REGISTERS
6.4.1
START REGISTERS AND ASSOCIATED CHECKSUM OPERATION SCHEME
The Start Registers (ConfigStart (30H), CalStart (40H), HarmStart (50H) and AdjStart (60H)) and associated registers / checksum have a special
operation scheme to protect important configuration data, illustrated below in the diagram. Start registers have multiple valid settings for different
operation modes.
Figure-22 Start and Checksum Register Operation Scheme
6.4.2
CONFIGURATION REGISTERS
Start Register Value
Usage
Operation
6886H
Rower up state
It is the value after reset. This state blocks checksum checking error generation
5678H
Calibration
Similar like 6886H, This state blocks checksum checking error generation. Writing with this value trigger a reset
to the associated registers.
8765H
Operation
Checksum checking is enabled and if error detected, IRQ/Warn is asserted and Metering stopped.
Other
Error
Force checksum error generation and system stop.
Table-5 Configuration Registers
Register
Address
Register Name
Read/Write
Type
Functional Description
Power-on Value and Comments
Configuration Registers
30H
R/W
Calibration Start Command
6886H
31H
R/W
High Word of PL_Constant
0861H
32H
R/W
Low Word of PL_Constant
C468H
33H
R/W
HPF/Integrator On/off, CF and all-phase energy
computation configuration
0087H
34H
R/W
PGA gain configuration
0000H
35H
PStartTh
R/W
Active Startup Power Threshold.
16 bit unsigned integer, Unit: 0.00032 Watt (DSP bit
27 aligned)
0000H.
36H
QStartTh
R/W
Reactive Startup Power Threshold.
16 bit unsigned integer, Unit: 0.00032 var
0000H
xxxStart register
Start Associated
Regisers
CheckSum
(computed)
Checksum
Computation
0
1
IRQ/WarnOut
Generation
Metering
Enable
0
1
Checksum
Error
xxxStart = 5678H
xxxStart =
8765H
0
1
CheckSum
(programmed)
Compare Error?
User Write
User Read
xxxStart refers to ConfigStart, CalStart, HarmStart and
AdjStart. Those registers and their assoicated checksum
computation has similar behavior.
xxxStart registers’ reset value is 6886H.
Writing 5678H to xxxStart register will trigger a reset to its
associated register. Register can be accessed after reset.
xxxStart associated register is the register between
xxxStart and associated checksum
0
1
xxxStart =
6886H
0
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